Ultraviolet Absorption Spectrum from Difference in Temperature (SDT) and Its Application

UV absorption spectrum measured from difference in sample temperature (SDT) is studied. The change of 10^-3 absorbance can be measured. The UVSDT of some chemical compounds measured is very characteristic. Fullerence C₆₀ gives negative UVSDT peaks, the larger is the difference in temperature(∇t),the stronger is the intensity of negative UVSDT peak.